Grand Rapids, Michigan is not a Spanish name. It derives from the French "Grandes Rapides" (or "Grande Rivière" – "Big River/Rapids"), named by 17th-century French fur traders for the rapids on the Grand River.
Michigan has very few Spanish-derived place names (unlike Southwest US). Possible minor examples:
Michigan was explored/settled by French (Jesuits, coureurs de bois) then British, then Americans from Northeast. No Spanish colonial presence. Names are overwhelmingly French (Detroit, Marquette, Cadillac, Sault Ste. Marie, Presque Isle, Grosse Pointe, Ecorse, Gratiot, Livernois), Native American (Kalamazoo, Mackinac, Muskegon, Saginaw, Washtenaw, Ypsilanti), or American/English.
Conclusion: No Michigan city has a directly Spanish toponymic origin. Grand Rapids is French.