Gallant

I am looking for information on my grandfathers first marriage. He is John Clarence Gallant DOB 10/1/1916,enlisted in 1942. Unknown marriage 1943-47?, child of first marriage is Linda Sue Gallant. 2nd marriage to Margorie Doughty of Maine in 1948. Not sure if he was married in Maine or maybe Louisianna. Thanks for any help,