Hello John:
Congratulation!
Your experience about researching your ancestral line of "González de Hermosillo" has knick me in a hard way, is very impacting to any that has spent much time in our research, many times we seek where there are noting of information, in Spanish we say: "damos palos de ciego".
You say:
"I feel that being able to go back about 455 years was mostly luck...".
You are very "modesto", you did your work to obtain that you now have. The "luck" is where the preparation and opportunity join to benefit our, if there is not "preparation", there is not "luck", and if there is not "opportunity", then there is not "luck". Your minds
proceed to run in the accurate way, because you were thinking about of your ancestors, and this is the best preparation to do the research. After, you were work hard to found your genealogical tree:
"I was surfing the internet one day and...
"I went to visit a cousin, who...
"I went to the Census records