Hello, to answer ur question, yes we r related. Herman Delbruegge was my great-grandfather. I looked into my family tree book and it seems that ur great-grandfather Henry Delbringge or as he was born as August
Heinrich Dellbruegge and my g-g-grandfather
Heinrich Wilhelm Delbruegge were brothers. So looks like we r cousins. I think the reason why ur grandfather changed the spelling of the name is the way they pronounced it. My father's family still pronounce "Delbruegge" as "Delbrigge" as opposed to other people who say "Delbroogge". Anyway would u like more information abt the link between our families? And also how did u figure out that we might b related? Thanx.