Looking for Walker Family IN Scotland

The earliest date I have is 1904 in Scotland. The first name is John. He was my grandfather, he married Esther Neil who was born in Northern Ireland. Theiir children were John b. 5-6-1932; Archibald b. after 1932; James Neil b. after 1932 and Esther b. 1-1-1927. Esther was my mother and the only one of them to come to the United States. I need help finding information on the family in Scotland. All of the children were born in Scotland. My mother was born in Clydebank.