Two sunspot observations recorded by the Mexican Felipe de Zuniga y Ontiveros have been revealed from a manuscript. One sunspot group was recorded on 9th January 1777 and four sunspot groups on 29th December 1777. Both records were taken during the observation of solar eclipses from Mexico City and their description also included sketches of the solar disk with sunspots. The sunspot group corresponding to 9th January was also observed by Erasmus Lievog. The observation on 29th December 1777 is the only record corresponding to this date.

Supports from the Junta de Extremadura (Research Group Grant GR15137) and from the Ministerio de Economia y Competitividad of the Spanish Government (AYA2014-57556-P) are gratefully acknowledged. FDC thanks the support from the EU and Spanish Ministry of Economy and Competitiveness for funding, in the frame of the collaborative international consortium IMDROFLOOD financed under the ERA-NET Cofund WaterWorks2014. The editor thanks Ilya Usoskin and an anonymous referee for their assistance in evaluating this paper.

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