No. At the time of the birth of his children, Frederick Douglass was living in a free state, so his children were not born into slavery. With the help of British supporters, Frederick Douglass was able to purchase his freedom in 1847.
Frederick Gore was born in 1913.
Frederick Karl was born in 1927.
Frederick Stock was born in 1872.
Frederick Montague was born on October 8, 1876.
Fredrick Douglas was born in Tuckahoe, Talbot country in Maryland.
Frederick David Schaeffer was born in 1760.
Frederick Victor was born in 1869.
Frederick Barry was born in 1953.
Frederick I was born on May 8, 1460.
Michael Frederick was born in 1927.
Frederick Tweedie was born in 1877.