Albert married Charlene Lynette (Princess of Monaco) Wittstock [Group Sheet] [Family Chart]

1. Princess Gabriella Th?r?se Marie Grimaldi
2. Prince Jacques Honor? Rainier Grimaldi

Notes:

His Serene Highness The Sovereign Prince of Monaco, ruled the Principality of Monaco for more than 50 years, making him one of the longest ruling monarchs of the 20th century. Though he was best known outside of Europe for having married American actress Grace Kelly, he was also responsible for reforms to Monaco's constitution and for expanding the principality's economy beyond its traditional gambling base. Gambling accounts for approximately three percent of the nation's annual revenue today; when Rainier ascended the throne in 1949, it accounted for more than 95 percent.

Prince Rainier had nine grandchildren:
Andrea, Charlotte and Pierre Casiraghi - children of Princess Caroline and Stefano Casiraghi;
Princess Alexandra of Hanover - daughter of Princess Caroline and Ernst August V, Prince of Hanover
Louis and Pauline Ducruet - children of Princess St?phanie and Daniel Ducruet
Jazmin Grace Grimaldi - the illegitimate daughter of Prince Albert II of Monaco and Tamara Rotolo
Alexandre Coste - the illegitimate son of Prince Albert II of Monaco and Nicole Coste
Camille Gottlieb - the illegitimate daughter of Princess St?phanie.

Rainier married Grace Kelly in Apr 1956. Grace (daughter of John Brendan "Jack" Kelly and Margaret Katherine Majer) was born on 12 Nov 1929; died on 14 Sep 1982. [Group Sheet] [Family Chart]

Notes:

An American actress

Pierre + Charlotte (Princess of Monaco) Louvet. Charlotte (daughter of Louis Honor? Charles Antoine (Luis II, Prince of Monaco) Matignon-Grimaldi and Ghislaine Marie Fran?oise Dommanget) was born in 1898 in Algeria; died in 1977. [Group Sheet] [Family Chart]

Notes:

Hereditary Princess Charlotte ceded her succession rights to her son, Rainier, in 1944, at which time he became Hereditary Prince. When Louis died five years later, he was succeeded by his grandson, Prince Rainier III.

Her parents were unmarried

In the turmoil of W.W.I, another disregard for the Succession Rules of the Grimaldi dynasty happened. The French Government of the time wanted a ruler on the throne of the principality who would not threaten the security of France. The aging prince being unmarried, the French Government sought the heir to the throne of Monaco among the prince's affairs. It eventually found the solution in Charlotte Louvet, an illegitimate daughter of prince Louis Matignon-Grimaldi, born in Algeria, whom the prince then decided to adopt. Ms. Louvet took the Grimaldi name and immediately married Pierre de Polignac, a French nobleman, who in turn changed his name to Grimaldi.

John + Margaret Katherine Majer. Margaret was born on 13 Dec 1898; died on 6 Jan 1990. [Group Sheet] [Family Chart]

Notes:

An only child, he was the eleventh Sovereign Prince of Monaco and the eleventh Duke of Valentinois from 27 June 1922 until 9 May 1949.

Louis was raised in Germany by his mother and stepfather, Count -and later Prince- Tassilo Festetics von Tolna, along with his eldest half-sister, Maria-Mathilde (later grandmother of Ira von F?rstenberg), and did not see his father until age 11 when he was obliged to return to Monaco to be trained for his future royal duties.

A political crisis loomed for the Prince because without any other heir, the throne of Monaco would pass to his first cousin Wilhelm, the duke of Urach, a German nobleman who was a son of Prince Albert's aunt, Princess Florestine of Monaco. To ensure this did not happen, in 1911 a law was passed recognizing his bastard daughter, Charlotte, as Louis's acknowledged heir, and making her part of the sovereign family. This law was later held to be invalid under the 1882 statutes. Thus another law was passed in 1918 modifying the statutes to allow the adoption of an heir, with succession rights. Charlotte was formally adopted by Louis in 1919, and became Charlotte Louise Juliette Grimaldi, Princess of Monaco, and Duchess of Valentinois.

Louis + Ghislaine Marie Fran?oise Dommanget. Ghislaine was born on 13 Oct 1900 in Rheims, Marne, Champaigne, France; died on 30 Apr 1991 in Neuilly-sur-Seine, France. [Group Sheet] [Family Chart]