Thomas Galloway held office in the Royal Astronomical Society and won the Royal Society's 1848 Royal Medal, concurrent with his career as an actuary

Thomas Galloway (1796–1851), actuary of the Amicable Society from 1833 to his death, was elected a Fellow of the (Royal) Astronomical Society in 1829 and served as its vice-president in both 1837 and 1848 and as its secretary in 1847. On 30 November 1848 he was awarded the Royal Society's Royal Medal for his memoir "On the Proper Motion of the Solar System," read before the Society on 15 April 1847 and published in Philosophical Transactions, vol. 137 (1847), pp. 79–109 — an attempt to determine the direction of the solar system's own motion from southern-hemisphere stellar proper motions.

Per the Wikisource DNB entry, Galloway's astronomical honors fell entirely within his tenure at the Amicable: the two careers ran in parallel for roughly two decades rather than one following the other. He was not among the Institute of Actuaries' 1848 founding cohort (first president John Finlaison, 1848–1860) — the astronomical and actuarial institutional worlds he moved in never formally overlapped, only his own career did.

The source material here is paraphrased from a WebFetch summarizing layer rather than quoted verbatim from a direct fetch or extract, so no exact phrase is recorded as source_quote, per the 2026-07-28 quote-provenance rule (00-meta/specs/sources.md). The facts themselves — offices held, dates, the medal — are ordinary uncontested biography and clear the Tier 3-4 floor for that kind of claim, but the claim is load-bearing for observation-galloway-is-a-third-astronomer-actuary-instance, which is the kind of "surprising" pairing the sourcing floor recommends escalating toward a primary. See question-verify-galloway-royal-medal-astronomer-primary. (Correction, 2026-07-29 audit: an earlier wording credited Wikipedia as co-carrying the astronomical honors; the live Wikipedia article is a stub whose body records only the Amicable post and the 1847 memoir — the offices and the medal rest on the DNB entry alone.)