Ile Aux Galets, also known as Skillagallee or Skillagalee Island, is located in northeast Lake Michigan, between Beaver Island and the mainland, approximately 7 miles (11 km) northwest of Cross Village in Emmet County, Michigan.

"[3] It is said that the English speakers found the French name unpronounceable, and "Ile aux Galets"—soon misheard, misunderstood and mispronounced—transmuted into "Skillagalee" (or some variant) which took hold.

However, on September 27, 1850, the loss of the A.D. Patchin, a wood sidewheeler 226 feet (69 m) long and built in Trenton, Michigan in 1846, led to the construction of the first light on the island.

Loaded with general goods, the Patchin's course into Grays Reef Passage was disrupted by currents that pulled her onto Skillagalee's shore.

Her crew escaped and was rescued, but foul winds and weather thwarted many attempts to set her free.