Born: December 5, 1891
Birth Place: Paterson, NJ
Judge Grimshaw was born in Paterson, New Jersey, on December 5, 1891, son of John and Martha Ann (Mottershead).
He was educated at Paterson Public Schools and Lafayette College, Easton, Pennsylvania and held the degree of LL.B. Admitted to New Jersey Bar in February, 1916.
Judge Grimshaw was Assistant United States Attorney from 1929 to 1932 at which time he became a Referee in Bankruptcy.
He was a member of the New Jersey State, American and Federal Bar Associations.
In 1937 Judge Grimshaw married Harriet Jane Markle and they had two children, Harriet Ann, born in August 1939 and John Markle born in September, 1940.